UYDRANeEA. DECANDRIA. DIGYNIA. 44^ 



beneath, obtuse at the base, acuminate, dentate ; cymes 

 uaked. Mich. FL I. p. 268. Pursh Fl. I. p. 300. 

 Elliot t Sk. I, ];*. 50'd. K ut i. Gen. \. ^. 2ZA. H. ar- 

 borescens L. Willd. Spec. II. p. 633. Bot. Ma^. 437. 

 L a m. III. t. 370. f. 1 . M i 1 1, icon. 251. 



A shrub 5 — 6 feet high, with opposite branches. Leaves oppo- 

 site, petiolate, often a little cordate at the base, acuminate, pu- 

 bescent, green on both sides. Flowers cymose, all uniform, 

 (rarely radiate.) Calyx minute, 5-toothed. Petah white, 

 small. StaJiicns longer than the petals, a little unequal ; an- 

 thers oblong. Styles 2 or 3, persistent. Ca/isule somewhat 

 2 — 3-beaked by the persistent styles, opening by a transverse 

 foramen between the beaks. The capsule is invested with the 

 persistent calyx, which is truncate and iO-ribbed ; the ribs 

 connected at the top by a margin. Seeds oblong, striate. 



IIab. In shady rocky situations on the banks of rivers. Near 

 Philadelphia, &c. July. 



The H. cordata of Pursh is, by several good BotanistSj 

 considered as a mere variety of H. vulgaris. 



2. H. radiata W ait. : leaves ovate, acuminate, serrate, 

 lomentose and white beneath ; cymes radiate. JV a 1 1. Car. 

 p. 251. Will d. Spec. IF. p. 634. H. 7uvea M i c h. Fl. I. 

 p. 269. Fursh FL I. \>, 300, E 1 1 io 1 1 Sk. \. p, 510. 

 HvDRANGEA Lam. //^. t. 307. f. 2. 



A shrub about 6 feet high, with smooth opposite branches. 

 Leaves frequently subcordate, conspicuously acuminate, pu- 

 bescent along the veins on the upper surface, silvery tomen- 

 tose beneath • serratures mucronate. Cyrnes pedunculate, ter- 

 minal ; the lateral flowers very large and imperfect. Perfect 

 Fl. Calyx 5-toothed, 10-ribbed. Petals 5, white, oblonfj, 

 small. Stannns unequal, longer than the petals ; filaments 

 blender, smooth ; anthers roundish. Styles 2, short, divergent ; 

 etigmas simple. Abortive Fl. Calyx 3— 4-leaved, very large, 

 yellowish-white; leaflets oval, persistent. Corolla 3— .4-pc- 

 talled, minute. Stamens very short, sterile. Pistil a mere 

 rudiment. 



JIab. In Pennsylvania. Mu hi en berg. July. 



The above description was taken from a plant collected in 

 Virginia, and growing in Mr. Prince's Garden at Flush- 

 ing. 



295. SAXIFRAGA. L. 

 Cali/x 5-parted. Petals 5. Capsule superior or 

 inferior, or half inferior, 2- beaked, 2-celled, many- 

 seeded, opening b.etween the beaks. Gen. pi. 764. 

 J\fu 1 1. Gen. I. p. 285. Ju s s. p. 309. L a m. III. 

 t. 372. Nat. Ord. Saxifrages 7 u ^ 5. Saxifrage. 



